When Kylo Ren finds someone he likes, he feels like he needs to eliminate the competition. By stabbing them with his light saber. It's how he shows affection, after all. Bonus points if he cannot figure out why his intended is freaking out about it. He clearly showed himself as the superior choice! Don't really care the pairing but would prefer no (confirmed) incest (Rey is okay).
Kylo/Rey, deadly jealousy
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